Puzzle of the week #293

Level: 
4-Rook
Chess Diagram: 

[Event "Puzzle #293"][Date "2016.03.06"][Result "1-0"][SetUp "1"][FEN "6q1/6p1/2k4p/R6B/p7/8/2P3P1/2K5 w - - 0 1"]

This unusual position called "study" has been created 113 years ago by a very talented composer. It has passed the test of time for its incredible material situation to start with and the extremely clever solution for white (moving first) to save it. Your tasks:
a) What aspect of black's position is white going to take advantage of?
b) Find the clever solution
Total available points for this puzzle is 15. The answers will be published next time together with puzzle #294.

Puzzle #292 solution:
Game Feher - Mathe, 1989. The best solutions by the top 4 (congratulations!) can be summarized as such:
"a) White should play for a win
b) White should look at the exposed black king, which is the only piece defending the queen. This means that white can use it's h-pawn to penetrate blacks defence by chasing away the king
c) The best line is:

[Event "Puzzle #292"][Date "2016.03.01"][Result "1-0"][SetUp "1"][FEN "3r4/5b1p/5qk1/pp1p1p2/3Q1P1P/1P4P1/P5BK/2R5 w - - 0 1"]1.h5+! Kg7 2.h6+ Kg6 3.Rc6!! Rd6 4.Rxd6 Be6 5.Rxe6 Qxe6 6.Qg7+ Kh5 7.Qg5#

Correct solutions:
Deryk, Bradley, Daniel, Jalen - 20 points
Benjamin - 17 points
Coco, Cody - 15 points
Aaron - 7 points

Standings:
Jalen - 86 points
Bradley - 84 points
Daniel - 68 points
Deryk - 64 points
Benjamin - 60 points
Coco - 48 points
Aaron - 41 points
Yakov - 39 points
Cody - 38 points
Shya - 10 points
Dheera - 5 points

Comment: 

Attracting the defender